- Correspondence to Dr Tülay Yucel-Lindberg and Dr Kaja Eriksson, Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Box 4064, SE-141 04 Huddinge, Sweden; ,
- Received July 17, 2017
- Revised September 5, 2017
- Accepted September 8, 2017
- First published October 6, 2017.
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